package com.ambow.shop.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.ambow.shop.domain.User;


/**
 * Servlet Filter implementation class LoginFIlter
 */
@WebFilter(filterName = "LoginFilter", urlPatterns = { "/product/*" })
public class LoginFilter implements Filter {

	public LoginFilter() {
	}

	public void destroy() {

	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse resp = (HttpServletResponse) response;
		User user = (User) req.getSession().getAttribute("user");
		if (user != null) {
			chain.doFilter(request, response);
		} else {
			resp.sendRedirect("/authorization/toAdd");
		}
	}

	public void init(FilterConfig fConfig) throws ServletException {

	}

}
